JqWizard is a project mainly written in JavaScript, it's free.
A simple wizard wrapper built on top of jQuery UI dialogs.
jqWizard
This project is a light weight wrapper around jQuery UI dialogs to create a wizard.
It is Open Sourced under the Apache 2 license.
Dependency: jQuery jQuery UI jQuery UI Dialogs Any jQuery UI Theme
To use it, simply drop the js and css files into your web app, and the images into your images directory.
Modify the example_jqw_layout.js file to reflect how you want your wizard structured, then edit the divs in the index.html file to reflect your changes.
Wizard it up!